module teapo.persistence {

  export interface Drive {

    files(): string[];

​

    read(file: string): string;

​

    write(file: string, content: string);

  }

  export module Drive {

    export interface DriveMirror {

      write(file: string, content: string);

    }

    export interface Optional {

      detect(uniqueId: string, callback: (error: Error, detached: Detached) => void ): void;

    }

    export interface Detached {

      timestamp: number;

      apply(mainDrive: Drive, callback: (loaded: DriveMirror) => void): void;

      purge(callback: (loaded: DriveMirror) => void): void;

    }

  }

}